J2OrbitEffects:

Path: Orbit/OrbitMechanics

% Compute J2 effects on the orbital elements.
   Computes the advance of the perigee, orbit plane precession, critical
   inclination and the synchronous inclination as a function of the J2
   term and other orbital parameters.
   See also SunSyncInclination
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   Form:
   [wDot, WDot, thDot] = J2OrbitEffects( a, e, i, j2, mu, rP )
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   ------
   Inputs
   ------
   a              (1,1)  Semi major axis
   e              (1,1)  Eccentricity
   i              (1,1)  Orbit inclination
   j2             (1,1)  J2 term
   mu             (1,1)  Gravitational parameter
   rP             (1,1)  Planet radius

   -------
   Outputs
   -------
   wDot           (1,1)  Perigee advance  (rad/s)
   WDot           (1,1)  Orbit plane precession (rad/s)
   thDot                 Latitude drift rate        [rad/s]

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	 Reference: Wiesel, W. E. (1989.) Spaceflight Dynamics. pp. 86-87.
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